Trying to Express an Amount of Force

So, I'm working on an article about the SHIELD Helicarrier. I determined that, even if the ducted fans and related machinery weighed nothing, it would still take over a billion newtons to allow an aircraft carrier to hover. Is there any good way to describe how ridiculous that amount of force is?

It is equal to the force exerted by 1,457,725 (1.5 million) people on the Earth's surface for one thing. I'd say describing 1 billion newtons as the force required to lift an aircraft carrier is a pretty solid description.

Let's assume the four engines actually do produce enough force to keep the carrier airborne. Also, let's pretend they can work in space as well as in air.
According to this handy calculator:http://www.convertalot.com/relativistic_star_ship_calculator.html
were you to attach an elephant to these engines, it'd reach Alpha Centauri in 18 hours(elephant's time). It would have attained 0.9c in around an hour. The 10000g would probably not make for a pleasant journey though.